The invention discloses a micro-power wireless communication site channel environment simulator for short-distance power communication. In the simulator, a microprocessor unit is connected with an attenuator input module, an attenuator output module and a communication interface. The attenuator input module is used for inputting signals to be attenuated into the microprocessor unit; the microprocessor unit is used for outputting the signals to be attenuated to the attenuator output module after processing the signals which are to be attenuated and input by the attenuator input module; the attenuator output module is used for outputting the attenuation signals; the communication interface is used for receiving external control signals and providing the external control signals for the microprocessor unit; the simulator is applied to a communication network formed by a host node and at least one slave node, the host node and the slave nodes are tested micro-power wireless communication devices, and the host node is connected with the first slave node through one simulator, connected with the second slave node through two simulators, and connected with the last slave node by parity of reasoning. The simulator can simulate the micro-power wireless communication site channel environment for short-distance power communication.